diffusion

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4 Terms

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what is diffusion

the net movement of substances from an area of high concentration to an area of low concentration down a concentration gradient directly through the phospholipid bilayer

2
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4 facts about diffusion

molecules have kinetic energy

no energy required from atp

no specific proteins required

3
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molecules that diffuse through the bilayer

lipid soluble

small non polar

very small and polar

4
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4 factors affecting the rate of diffusion

temperature high temp more kinetic energy

concentration gradient

thickness of exchange surface the shorter the quicker

the surface area the larger the quicker